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-4.2x+31.5=-36.1
We move all terms to the left:
-4.2x+31.5-(-36.1)=0
We add all the numbers together, and all the variables
-4.2x+67.6=0
We move all terms containing x to the left, all other terms to the right
-4.2x=-67.6
x=-67.6/-4.2
x=16+0.39999999999999/4.2
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